Extension shortcut

Windows 8.1 Pro Vivaldi ver .. 551.30 I have created a shortcut to a desktop extension that I use expecting that I would be able to launch the application by clicking the desktop icon. Instead it just opens Vivaldi. I have't used these even in Chrome so I may have missed doing something. The application desktop icon was created for the extension's download page under the link "Details". What do I need to do to get this to work? Thanks Update: I just test this on Chrome using the same technique to create the shortcut and it worked fine. Once created, clicking on the desktop shortcut brought up the application in its own window.